Patent No. EP3042971 (titled "Lead-Free High-Sulphur Easy-Cutting Alloy Containing Manganese And Copper And Preparation Method Therefor") was filed by Hunan Terry NEW Materials on Sep 4, 2013. The application was issued on Nov 7, 2018.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
| Company | Opposition Date | Representative |
|---|---|---|
| OTTO FUCHS KOMMANDITGESELLSCHAFT | Aug 6, 2019 | HAVERKAMP PATENTANWALTE PARTG MBB |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
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